Water-insoluble monoazo dyestuffs which is a diazotized 6-cyano-2:4-dinitroaniline coupled to a m-acylamino-substituted aniline

Abstract

Water-insoluble monoazo dyestuffs of the formula ##STR1## wherein R is optionally substituted lower alkyl or phenyl, X is β-hydroxyethyl or γ-chloro-β-hydroxypropyl, and Y is lower alkyl, a process for the manufacture of the said dyestuffs and their use for coloring synthetic textile materials in particular aromatic polyester textile materials.

We claim: 
     
       1. A water-insoluble monoazo dyestuff of the formula: ##STR4## wherein R is selected from lower alkyl, chloro lower alkyl, tolyl and phenyl, and Y is lower alkyl. 
     
     
       2. A dyestuff as claimed in claim 1 wherein R is lower alkyl.